Abstract

Construction and performance of a far-infrared diffraction-grating spectrometer are described and compared with those of the Michelson interferometer built by Richards. There is no marked difference between the spectral resolutions of these two instruments. The resolutions attained are between 0.1 and 0.05 cm<sup>-1</sup> in the spectral region from 30 cm<sup>-1</sup> to 60 cm<sup>-1</sup>. Some features of the spectrometer discussed in the article are the focusing of the beam on the Golay detector by a conical light pipe, the manufacture of long, thin conical light pipes and of Yoshinaga filters, a special design of the optical path, and a new optical arrangement for reflectance measurements.

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  1. P. L. Richards, J. Opt. Soc. Am. 54, 1474 (1964).
  2. For example, see: R. A. Oetjen et al., J. Opt. Soc. Am. 42, 559 (1952); L. Genzel and W. Eckhardt, Z. Physik 139, 579 (1954); H. Yoshinaga el al., J. Opt. Soc. Am. 48, 315 (1958); N. G. Yaroslavskii and A. E. Stanevitch, Opt. Spectry. 6, 521 (1959); 7, 380 (1959); P. L. Richards and M. Tinkham, Phys. Rev. 119, 575 (1960); V. N. Murzin and A. I. Demshina, Opt. Spectry. 13, 467 (1963); I. Makino et al., Report of the Conf. on Photographic and Spectoscopic Optics, Tokyo and Kyoto, Sept. (1964), p. 369; T. Sakurai, S. Takahashi, p. 358.
  3. H. A. Gebbie, Symposium on Interferometry, N.P.L. (1959), Paper 5-4; Advances in Quantum Electronics, J. R. Singer, Ed. (Columbia University Press, Neav York, 1961), p. 156.
  4. H. Yoshinaga, Report of the Conf. on Photographic and Spectroscopic Optics, Tokyo and Kyoto, Sept. (1964), p. 420.
  5. J. Strong and G. A. Vanasse, J. Phys. Radium 19, 192 (1958); J. Opt. Soc. Am. 50, 113 (1960).
  6. L. Genzel and R. Weber, Z. Angew. Physik 10, 127, 195 (1958); L. Genzel, J. Mol. Spectry. 4, 241 (1960).
  7. K. F. Renk and L. Genzel, Appl. Opt. 1, 643 (1962); R. Ulrich, K. F. Renk, and L. Genzel, IEEE Trans. Microwave Theory Tech. MTT-11, 363 (1963).
  8. M. Czerny and A. F. Turner, Z. Physik 61, 792 (1930).
  9. J. U. White, J. Opt. Soc. Am. 37, 713 (1947).
  10. S. Roberts and D. D. Coon (private communication).
  11. F. K. Kneubühj, J.-F. Moser, H. Steffen, and W. Tandler, Z. Angew. Math. Phys. 16, 560 (1965).
  12. M. Camani, F. K. Kneubühl, J.-F. Moser, and H. Steffen, Z. Angew. Math. Phys. 16, 562 (1965).
  13. H. Steffen, J. Steffen, J.-F. Moser, and F. K. Kneubühl, Phys. Letters 20, 20 (1966).
  14. H. Yoshinaga, J. Opt. Soc. Am. 52, 17 (1962).
  15. D. E. Williamson, J. Opt. Soc. Am. 42, 712 (1952).
  16. M. Tinkham, J. Opt. Soc. Am. 48, 531 (1958).
  17. H. H. Günthard, Laboratorium für Physikalische Chemie, ETH, Zürich, Switzerland (private communication).

Camani, M.

M. Camani, F. K. Kneubühl, J.-F. Moser, and H. Steffen, Z. Angew. Math. Phys. 16, 562 (1965).

Coon, D. D.

S. Roberts and D. D. Coon (private communication).

Czerny, M.

M. Czerny and A. F. Turner, Z. Physik 61, 792 (1930).

Gebbie, H. A.

H. A. Gebbie, Symposium on Interferometry, N.P.L. (1959), Paper 5-4; Advances in Quantum Electronics, J. R. Singer, Ed. (Columbia University Press, Neav York, 1961), p. 156.

Genzel, L.

L. Genzel and R. Weber, Z. Angew. Physik 10, 127, 195 (1958); L. Genzel, J. Mol. Spectry. 4, 241 (1960).

K. F. Renk and L. Genzel, Appl. Opt. 1, 643 (1962); R. Ulrich, K. F. Renk, and L. Genzel, IEEE Trans. Microwave Theory Tech. MTT-11, 363 (1963).

Günthard, H. H.

H. H. Günthard, Laboratorium für Physikalische Chemie, ETH, Zürich, Switzerland (private communication).

Kneubühj, F. K.

F. K. Kneubühj, J.-F. Moser, H. Steffen, and W. Tandler, Z. Angew. Math. Phys. 16, 560 (1965).

Kneubühl, F. K.

M. Camani, F. K. Kneubühl, J.-F. Moser, and H. Steffen, Z. Angew. Math. Phys. 16, 562 (1965).

H. Steffen, J. Steffen, J.-F. Moser, and F. K. Kneubühl, Phys. Letters 20, 20 (1966).

Moser, J.-F.

H. Steffen, J. Steffen, J.-F. Moser, and F. K. Kneubühl, Phys. Letters 20, 20 (1966).

M. Camani, F. K. Kneubühl, J.-F. Moser, and H. Steffen, Z. Angew. Math. Phys. 16, 562 (1965).

F. K. Kneubühj, J.-F. Moser, H. Steffen, and W. Tandler, Z. Angew. Math. Phys. 16, 560 (1965).

Oetjen, R. A.

For example, see: R. A. Oetjen et al., J. Opt. Soc. Am. 42, 559 (1952); L. Genzel and W. Eckhardt, Z. Physik 139, 579 (1954); H. Yoshinaga el al., J. Opt. Soc. Am. 48, 315 (1958); N. G. Yaroslavskii and A. E. Stanevitch, Opt. Spectry. 6, 521 (1959); 7, 380 (1959); P. L. Richards and M. Tinkham, Phys. Rev. 119, 575 (1960); V. N. Murzin and A. I. Demshina, Opt. Spectry. 13, 467 (1963); I. Makino et al., Report of the Conf. on Photographic and Spectoscopic Optics, Tokyo and Kyoto, Sept. (1964), p. 369; T. Sakurai, S. Takahashi, p. 358.

Renk, K. F.

K. F. Renk and L. Genzel, Appl. Opt. 1, 643 (1962); R. Ulrich, K. F. Renk, and L. Genzel, IEEE Trans. Microwave Theory Tech. MTT-11, 363 (1963).

Richards, P. L.

P. L. Richards, J. Opt. Soc. Am. 54, 1474 (1964).

Roberts, S.

S. Roberts and D. D. Coon (private communication).

Steffen, H.

F. K. Kneubühj, J.-F. Moser, H. Steffen, and W. Tandler, Z. Angew. Math. Phys. 16, 560 (1965).

M. Camani, F. K. Kneubühl, J.-F. Moser, and H. Steffen, Z. Angew. Math. Phys. 16, 562 (1965).

H. Steffen, J. Steffen, J.-F. Moser, and F. K. Kneubühl, Phys. Letters 20, 20 (1966).

Steffen, J.

H. Steffen, J. Steffen, J.-F. Moser, and F. K. Kneubühl, Phys. Letters 20, 20 (1966).

Strong, J.

J. Strong and G. A. Vanasse, J. Phys. Radium 19, 192 (1958); J. Opt. Soc. Am. 50, 113 (1960).

Tandler, W.

F. K. Kneubühj, J.-F. Moser, H. Steffen, and W. Tandler, Z. Angew. Math. Phys. 16, 560 (1965).

Tinkham, M.

M. Tinkham, J. Opt. Soc. Am. 48, 531 (1958).

Turner, A. F.

M. Czerny and A. F. Turner, Z. Physik 61, 792 (1930).

Vanasse, G. A.

J. Strong and G. A. Vanasse, J. Phys. Radium 19, 192 (1958); J. Opt. Soc. Am. 50, 113 (1960).

Weber, R.

L. Genzel and R. Weber, Z. Angew. Physik 10, 127, 195 (1958); L. Genzel, J. Mol. Spectry. 4, 241 (1960).

White, J. U.

J. U. White, J. Opt. Soc. Am. 37, 713 (1947).

Williamson, D. E.

D. E. Williamson, J. Opt. Soc. Am. 42, 712 (1952).

Yoshinaga, H.

H. Yoshinaga, J. Opt. Soc. Am. 52, 17 (1962).

H. Yoshinaga, Report of the Conf. on Photographic and Spectroscopic Optics, Tokyo and Kyoto, Sept. (1964), p. 420.

Other (17)

P. L. Richards, J. Opt. Soc. Am. 54, 1474 (1964).

For example, see: R. A. Oetjen et al., J. Opt. Soc. Am. 42, 559 (1952); L. Genzel and W. Eckhardt, Z. Physik 139, 579 (1954); H. Yoshinaga el al., J. Opt. Soc. Am. 48, 315 (1958); N. G. Yaroslavskii and A. E. Stanevitch, Opt. Spectry. 6, 521 (1959); 7, 380 (1959); P. L. Richards and M. Tinkham, Phys. Rev. 119, 575 (1960); V. N. Murzin and A. I. Demshina, Opt. Spectry. 13, 467 (1963); I. Makino et al., Report of the Conf. on Photographic and Spectoscopic Optics, Tokyo and Kyoto, Sept. (1964), p. 369; T. Sakurai, S. Takahashi, p. 358.

H. A. Gebbie, Symposium on Interferometry, N.P.L. (1959), Paper 5-4; Advances in Quantum Electronics, J. R. Singer, Ed. (Columbia University Press, Neav York, 1961), p. 156.

H. Yoshinaga, Report of the Conf. on Photographic and Spectroscopic Optics, Tokyo and Kyoto, Sept. (1964), p. 420.

J. Strong and G. A. Vanasse, J. Phys. Radium 19, 192 (1958); J. Opt. Soc. Am. 50, 113 (1960).

L. Genzel and R. Weber, Z. Angew. Physik 10, 127, 195 (1958); L. Genzel, J. Mol. Spectry. 4, 241 (1960).

K. F. Renk and L. Genzel, Appl. Opt. 1, 643 (1962); R. Ulrich, K. F. Renk, and L. Genzel, IEEE Trans. Microwave Theory Tech. MTT-11, 363 (1963).

M. Czerny and A. F. Turner, Z. Physik 61, 792 (1930).

J. U. White, J. Opt. Soc. Am. 37, 713 (1947).

S. Roberts and D. D. Coon (private communication).

F. K. Kneubühj, J.-F. Moser, H. Steffen, and W. Tandler, Z. Angew. Math. Phys. 16, 560 (1965).

M. Camani, F. K. Kneubühl, J.-F. Moser, and H. Steffen, Z. Angew. Math. Phys. 16, 562 (1965).

H. Steffen, J. Steffen, J.-F. Moser, and F. K. Kneubühl, Phys. Letters 20, 20 (1966).

H. Yoshinaga, J. Opt. Soc. Am. 52, 17 (1962).

D. E. Williamson, J. Opt. Soc. Am. 42, 712 (1952).

M. Tinkham, J. Opt. Soc. Am. 48, 531 (1958).

H. H. Günthard, Laboratorium für Physikalische Chemie, ETH, Zürich, Switzerland (private communication).

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